Maltitol IR Granules are pharmaceutical excipient-based granules developed for immediate-release formulation applications. The term “IR” refers to the intended immediate-release performance of the finished granulated formulation. Maltitol is a sugar alcohol used in pharmaceutical formulation development and has been investigated for tablet compression, granulation and oral solid dosage applications.
Maltitol is also known as d-glucopyranosyl-d-glucitol. It has the molecular formula C₁₂H₂₄O₁₁, molecular weight 344.31 g/mol, and CAS Number 585-88-6. The current USP-NF Maltitol monograph specifies 92.0% to 100.5% d-maltitol, calculated on an anhydrous basis.
Maltitol is highly water soluble. FCC describes Maltitol as a white crystalline material that is very soluble in water and slightly soluble in ethanol.
Converting maltitol into granules provides a controlled particulate form that can be evaluated for particle size, flowability, density, moisture and handling characteristics. For immediate-release formulation development, these physical properties can influence blending, processing, tablet compression and the wetting and disintegration behavior of the finished dosage form.
Immediate-release formulations are designed to release their active component without an intentionally prolonged or delayed-release mechanism. For Maltitol IR Granules, the IR designation relates to the finished granule formulation and its intended performance, rather than being an inherent property of maltitol.
The release characteristics of a finished granule depend on the formulation composition, granule structure, particle size, excipients, processing conditions and any additional functional ingredients.
Therefore, a specific dissolution time or release percentage should only be stated when supported by the actual product specification or validated dissolution data.
Maltitol is a polyol that has been investigated as a pharmaceutical excipient. Scientific research has evaluated maltitol in relation to granulation, tablet compression and formulation performance.
Research has specifically examined maltitol as a material used during pharmaceutical granulation processes, including studies of sugar alcohols in wet granulation.
Maltitol has also been studied as a binder in granulated tablet systems, where researchers evaluated granule formation, tablet strength and disintegration characteristics.
These studies demonstrate the relevance of maltitol to pharmaceutical granulation and solid dosage formulation development, although the performance of a commercial Maltitol IR Granules grade must always be determined from its own formulation and product specifications.
Maltitol has the chemical formula C₁₂H₂₄O₁₁ and molecular weight 344.31 g/mol. Its CAS Number is 585-88-6. The current USP-NF monograph identifies maltitol as d-glucopyranosyl-d-glucitol.
USP-NF specifies maltitol content of not less than 92.0% and not more than 100.5%, calculated on an anhydrous basis.
Maltitol's water solubility is an important physical property for formulation development. FCC describes it as very soluble in water and slightly soluble in ethanol.
For Maltitol IR Granules, the finished granule characteristics should be evaluated separately from the chemical specification of the starting maltitol material.
Granulation is a particle-engineering process that converts fine or crystalline material into larger, more controlled particles. In pharmaceutical manufacturing, granulation can influence powder handling, flow, density, compressibility and downstream processing.
Maltitol-containing granules can be characterized using:
These parameters are product-specific and should only be published as numerical specifications when supported by the actual product specification or Certificate of Analysis.
For Maltitol IR Granules, immediate-release performance should be established through appropriate product-specific testing.
Factors that can influence release and disintegration include:
Maltitol's high water solubility can be relevant to formulation development, but the release behavior of the finished granules cannot be predicted solely from the solubility of maltitol.
Therefore, generic claims such as “rapid release within a specific number of minutes” should not be included unless supported by validated product data.
Maltitol IR Granules may be considered for pharmaceutical formulation development involving:
The exact role of Maltitol IR Granules depends on the formulation design, concentration, particle characteristics and manufacturing process.
Maltitol has been studied for tablet compression and tableting performance. Research comparing different physical forms of maltitol found that its physical state can substantially affect compression behavior and tabletability. The research also examined a textured crystalline maltitol grade developed for direct compression.
For Maltitol IR Granules, compression-related properties may be evaluated during formulation development depending on the intended dosage form.
Potential development parameters include:
These are finished formulation or development parameters, not universal Maltitol Granules specifications.
Flowability is an important characteristic of granulated excipients because consistent material movement can support reliable blending, transfer and processing.
Maltitol IR Granules can be evaluated using bulk density, tapped density, Carr Index, Hausner Ratio, angle of repose and other suitable flowability measurements.
Actual flowability depends on particle size, morphology, moisture, density and granulation conditions. Therefore, numerical flow values should only be included when supported by the actual product specification.
Particle-size distribution is an important quality characteristic for granulated pharmaceutical excipients.
D10, D50 and D90 measurements can be used to describe the distribution of granule sizes. Sieve analysis can also be applied where appropriate.
Controlled particle size can support consistent material handling and formulation processing. However, the appropriate particle-size range depends on the intended application and manufacturing process.
No universal D10, D50 or D90 value should be assigned to Maltitol IR Granules without product-specific data.
Maltitol is very soluble in water and slightly soluble in ethanol according to FCC.
This property can be relevant to immediate-release formulation development where rapid wetting and dissolution of a soluble excipient are desirable.
However, the behavior of a finished granulated material can differ from the raw material because granule size, porosity, binders and other formulation components can influence wetting and dissolution.
Quality control for Maltitol IR Granules should address both the chemical quality of maltitol and the physical properties of the finished granules.
Relevant quality attributes may include:
The current USP-NF Maltitol monograph provides the chemical material requirements, while finished granule characteristics should be established through the actual product specification.
Maltitol IR Granules should be manufactured using controlled granulation and particle-processing conditions appropriate for the intended formulation application.
Important process considerations can include granulation method, mixing, granule formation, drying, milling, screening and particle-size classification.
Moisture control is particularly important because it can influence granule flow, density, stability and compression behavior.
The manufacturing process should be controlled to provide consistent particle characteristics from batch to batch.
The chemical quality of the maltitol starting material should comply with the applicable standard. The current USP-NF Maltitol monograph specifies 92.0%–100.5% d-maltitol on an anhydrous basis.
Additional specifications for finished Maltitol IR Granules may include particle size, bulk density, tapped density, moisture, flowability and other validated physical parameters.
Dissolution and disintegration requirements should be established according to the intended finished formulation and should not be presented as universal values for every Maltitol IR Granules product.
| Parameter | Specification |
|---|---|
| Appearance | white to off-white crystalline powder |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 1.0% |
| Residue on Ignition | NMT 0.5% |